CVE-2022-38047 in Windows
Summary
by MITRE • 10/11/2022
Windows Point-to-Point Tunneling Protocol Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-22035, CVE-2022-24504, CVE-2022-30198, CVE-2022-33634, CVE-2022-38000, CVE-2022-41081.
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Analysis
by VulDB Data Team • 06/21/2026
The Windows Point-to-Point Tunneling Protocol remote code execution vulnerability represents a critical security flaw in Microsoft's networking infrastructure that affects multiple Windows operating systems. This vulnerability specifically targets the Point-to-Point Tunneling Protocol implementation within Windows, which is commonly used for creating virtual private networks and establishing secure connections between remote locations. The flaw enables attackers to execute arbitrary code on affected systems with the privileges of the targeted user, potentially leading to complete system compromise and unauthorized access to sensitive network resources. The vulnerability stems from improper input validation within the PPTP processing components, creating an exploitable condition that can be leveraged through malicious network traffic.
The technical exploitation of this vulnerability occurs when a malicious actor sends specially crafted PPTP packets to a vulnerable Windows system. The flaw resides in how the system processes incoming tunneling protocol data, particularly in the handling of control messages and tunnel configuration parameters. Attackers can manipulate these protocol elements to trigger memory corruption issues that result in code execution. This vulnerability is classified under CWE-121 as a stack-based buffer overflow, where insufficient bounds checking allows attackers to overwrite memory locations and potentially redirect program execution flow. The exploitation typically requires network access to the target system and can be executed without user interaction, making it particularly dangerous for remote attacks.
The operational impact of CVE-2022-38047 extends beyond individual system compromise to affect entire network infrastructures that rely on PPTP connectivity. Organizations using legacy PPTP implementations for remote access or site-to-site connections face significant risk, as this vulnerability can be exploited by threat actors to establish persistent access to corporate networks. The vulnerability's remote execution capability means that attackers can target systems from external networks without requiring physical access or prior authentication. This characteristic aligns with ATT&CK technique T1071.004 for application layer protocol usage and T1133 for external remote services, making it particularly concerning for organizations with remote workforce capabilities. The vulnerability affects Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, and Windows Server 2022, as well as various client operating systems that support PPTP functionality.
Mitigation strategies for this vulnerability should prioritize immediate patch deployment through Microsoft's regular security updates, as the company has released patches specifically addressing this flaw in their monthly security bulletin cycle. Organizations should also implement network segmentation and access controls to limit exposure of systems running PPTP services, while considering the deprecation of PPTP in favor of more secure protocols such as L2TP/IPsec or OpenVPN. Network monitoring solutions should be configured to detect anomalous PPTP traffic patterns that might indicate exploitation attempts, and intrusion detection systems should be updated to recognize signatures associated with this vulnerability. Additionally, security teams should conduct comprehensive vulnerability assessments to identify all systems that may be running PPTP services and ensure that these systems are properly patched and isolated from critical network segments. The vulnerability's classification as a remote code execution flaw makes it essential for organizations to maintain robust network security monitoring and incident response capabilities to detect and respond to potential exploitation attempts.